Vacuum glass panel

Abstract

A vacuum glass panel including a vacuum glass, a sash, and a grazing gasket is provided. The vacuum glass includes a first glass plate, a second glass plate having substantially the same area as the area of the first glass plate in a front view, and a depressurized layer arranged between the first glass plate and the second glass plate opposed to the first glass plate. The lower face of the first glass plate and the lower face of the second glass plate are misaligned relative to each other in the vertical direction. The sash includes two groove walls that define a groove for receiving the upper, lower, right, and left peripheral edge portions of the vacuum glass in a front view. The grazing gasket is arranged on at least the lower portion of the vacuum glass inside the groove and seals a gap between the vacuum glass and the groove walls, and includes a clamping portion for clamping the vacuum glass from a first outer principal surface of the first glass plate and a second outer principal surface of the second glass plate near the top portions of the groove walls.

The invention claimed is: 
     
       1. A vacuum glass panel comprising:
 vacuum glass including: 
 a first glass plate having a first outer principal surface, a first inner principal surface, and a first lower face; 
 a second glass plate having a second outer principal surface, a second inner principal surface, and a second lower face, and having substantially the same area as an area of the first glass plate in a front view; and 
 a depressurized layer arranged between the first inner principal surface and the second inner principal surface opposed to the first inner principal surface, the first lower face and the second lower face being misaligned relative to each other in a vertical direction; 
 a sash including two groove walls that define a groove for receiving upper, lower, left, and right peripheral edge portions of the vacuum glass in a front view; and 
 a glazing gasket that is arranged on at least a lower portion of the vacuum glass inside the groove and seals gaps between the vacuum glass and the groove walls of the sash, 
 wherein an amount of misalignment between the first lower face and the second lower face of the vacuum glass in a vertical direction is 0.5 mm or more, 
 wherein the glazing gasket includes a lower portion arranged inside the groove of the sash, and an upper portion protruding from the groove of the sash, 
 wherein the lower portion of the glazing gasket includes two groove walls, and a bottom portion that couples the lower portions of the groove walls, 
 wherein only the vicinities of the upper end portions of the groove walls of the glazing gasket are in contact with the inner faces of the groove walls of the sash, 
 wherein the upper portion of the glazing gasket includes a clamping portion for clamping the vacuum glass from the first outer principal surface and the second outer principal surface near top portions of the groove walls of the glazing gasket, 
 wherein the upper portion and the lower portion of the glazing gasket are made of different materials, and 
 the two groove walls of the glazing gasket are made of the same material. 
 
     
     
       2. The vacuum glass panel according to  claim 1 , wherein the areas of the first glass plate and the second glass plate in a front view are 1 m 2  or more. 
     
     
       3. The vacuum glass panel according to  claim 1 , wherein the glazing gasket further includes a bottom portion facing the first lower face and the second lower face. 
     
     
       4. The vacuum glass panel according to  claim 3 , wherein the bottom portion is constituted by an elastic body and is in contact with at least one of the first lower face and the second lower face. 
     
     
       5. The vacuum glass panel according to  claim 3 , wherein the bottom portion has a thickness of 0.5 mm or more, and the thickness is larger than an amount of misalignment between the first lower face and the second lower face in a vertical direction. 
     
     
       6. The vacuum glass panel according to  claim 1 , wherein the clamping portion clamps the vacuum glass from the first outer principal surface and the second outer principal surface at a point, the distance between the point and the upper end of the top portion is greater than 0 mm and less than 20 mm. 
     
     
       7. The vacuum glass panel according to  claim 1 , wherein the sash and the glazing gasket are provided with a drain hole. 
     
     
       8. The vacuum glass panel according to  claim 1 , wherein the first lower face and the second lower face are not in parallel with each other in a front view.